Eathtek Replacement 2.5" Drive Caddy Tray For IBM x3550 x 3650 x3500 x 3400 M2 M3 M4 HS12 HS22 44T2216 series (only fit for 2.5",4 screws attached) Compatible Model Number: IBM x3550 x3650 x3500 x3400 M2 M3 M4 HS12 HS22 Compatible Part Number:44T2216 Replacement and high quality,Replace your faulty, cracked or broken hdd caddy Each hdd caddy is tested before shipping All pictures are taken from the real item, please check carefully before bidding.